(adj): for or by a group rather than individuals
(adj): affecting the people or community as a whole
(adj): vs. uncommon) -- (having no special distinction or quality; widely known or commonly encountered; average or ordinary or usual
(adj): lacking special distinction, rank, or status; commonly encountered
(adj): representing or appealing to or adapted for the benefit of the people at large
(adj): of or for the common people
(adj): frequently encountered
(adj): prevailing among and common to the general public
(adj): of or involving the common people as constituting a fundamental political and economic group
(adj): commonly used or supplied
(adj): common to or shared by two or more parties
(adj): vs. unshared) -- (have in common; held or experienced in common
(adj): commonly encountered
(adj): vs. strange) -- (within normal everyday experience; common and ordinary; not strange
(adj): being or characteristic of or appropriate to everyday language
(adj): vs. formal) -- (used of spoken and written language
(adj): of or associated with the great masses of people
(adj): vs. noble) -- (of humble birth or origins
(adj): of low or inferior quality or value
(adj): vs. superior) -- (of low or inferior quality
(adj): lacking refinement or cultivation or taste
(adj): vs. refined) -- ((used of persons and their behavior) not refined; uncouth
(adj): to be expected; standard
(adj): vs. extraordinary) -- (not exceptional in any way especially in quality or ability or size or degree
(n): a piece of open land for recreational use in an urban area
(n): an extended area of land
I have observed that common is more common than uncommon; the 'why' does not enter my consideration.
Why do you say that? I typically just look for more than one listing, because most of the one listing words aren't really words.
Wordies prefer common (10 listings) over uncommon (1 listing).